Docker ppt
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The document provides an overview of Docker and its related concepts, including Docker images, commands, and container orchestration with Docker Swarm. It highlights the differences between virtualization methods and emphasizes the advantages of containerization, such as reduced resource consumption. Additionally, it presents a sample Docker Compose configuration for deploying a MySQL and WordPress setup.
Docker ppt
- 1. Docker Bhanuchander210 A Dev-Ops Tool Info Written in : Go Author : Solomon Hykes
- 2. Bhanuchander210 Virtualization Type 1 : ● One OS doesn’t affect other / Gyest OS ● Ex : Microsoft Hyper-V, VMware ESXi Server, Xen Server Type 2 : ● Host-Guest OS Methodology ● Ex : Microsoft Virtual PC, VMware Workstation, Oracle VBox
- 3. Bhanuchander210 Containerization OS level Virtualization ● ● Isolated virtual machine like user space running instances ● ● Ex : Zones, Virtual Kernels Virtual Machine ● Having Hypervisor. ● It consumes more. For example ~1.2Gb/instance ● So heavier ● Slower ● Needs bigger footprint (RAM and storage) Containers ● Replaces hypervisor. ● Consumes very less ~2.5Mb ● Lightweight ● Faster ● Smaller footprint (No RAM and individual storage)
- 4. Bhanuchander210 Docker Images Docker Image |---- CMD Layer |---- EXPOSE Layer |---- WORKDIR Layer |---- RUN Layer |---- Base Image Layer |---- bootfs Layers
- 6. Bhanuchander210 How To ? Build Run Quick Demo Video : Installation - Build - Run
- 7. Bhanuchander210 Docker Commands Basic ● docker inspect - Inspecting the information about the custom object. ● docker rm - Removing the object provided in arg. ● docker info - Printing the docker information. ● docker rename - All objects can be renamed. ● docker login - Registry Login ● docker logout - Registry Logout For containers, ● docker container ● docker ps - Process status for current running processes. ● docker start - Initiating the container. ● docker restart - Restarting the already started container. ● docker cp - Copy the files from the local directory to the container path. ● docker port - Port mapping on running container. ● docker pause ● docker unpause For Images, ● docker image ● docker search - Search images in customized docker registry. ● docker pull - Pulling images from registry. ● docker push - Pushing images to the customized registry. ● docker save - Save the image as compressed file. ● docker load - Load the compressed file as an image. ● docker rmi - Removing images. ● docker run - Create + Start the container in single command. Others ● docker volume - Mounting the local directory as a volume object to the container. ● docker network - Network configuration customizing for bridge, vlan and overlay networks. ● docker stats - Statistics on the container information on the machine environment. ● docker top - Normal Top command for quick view.
- 8. Bhanuchander210 Docker Compose Docker-compose.yaml version: '3.3' services: db: image: mysql:5.7 container_name: mysql_database volumes: - db_data:/var/lib/mysql restart: always environment: MYSQL_ROOT_PASSWORD: word@press MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: abc@123 wordpress: depends_on: - db image: wordpress:latest container_name: wd_frontend volumes: - wordpress_files:/var/www/html ports: - "8000:80" restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_USER: wordpress WORDPRESS_DB_PASSWORD: abc@123 volumes: wordpress_files: db_data: Run schema for Multiple Containers
- 9. Bhanuchander210 Docker Swarm Raft consensus in swarm mode http://thesecretlivesofdata.com/raft/ Can Tolerate upto (N-1)/2 Node failures
- 10. Bhanuchander210 Docker Swarm Master > docker swarm init > docker stack deploy -c stack.yml myname Worker > docker swarm join --token ***** ip:port In Master Node : > docker stack ps msql ID NAME IMAGE NODE CURRENT STATE r3qnn6q8v83m msql_db.1 mysql:latest bhanuchander.nmsworks.co.in Running 13 minutes ago bu06hxyucifm msql_adminer.1 adminer:latest bhanuchander.nmsworks.co.in Running 11 minutes ago Container Names will be skipped . . . !
- 11. Bhanuchander210 Overview Running Containers Single/Swarm Docker-Compose ? Our application Local Host Docker Image
- 12. Bhanuchander210 Others: ● Rancher ● Docker Machine ● Kubernetes vs Rancher vs Docker Machine Deployment: Objects ● POD ● Replica Set ● Deployment ● Service ● Namespace In my system around 53 types of kubernetes Controllers and objects are available.. Demands for Swarm Cluster Ex : Minikube, katakoda,.... Kubernetes